Unless size is an issue, I would spend a little more and get the S-350-24 or 27v MeanWell power supply.
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Scott

This thread is getting really interesting with input from designer and knowledgeable members. My contribution is merely to point to an alternative method of obtaining a decently charged +24Vdc SMPS at a much lesser cost. It's on Decibel Dungeon detailing the connection of 2x computer SMPS's. http://http://myweb.tiscali.co.uk/nu...clonesmps.html
Although it's really for +/- supply there are some details on how to obtain +24V supply. I haven't built such a supply but would like to know the reactions and experience of members as to the technical diy aspects of such a project.

Thanks to all contributors, particularly Nick and hifimediy!
Best regards.
Joe A

Shouldn't we look for SMPS with as high switching frequency as possible?
The S-350-24 or 27v Mean-Well's has 25kHz switching frequency - but I believe there are models with >40kHz -like the above item - shouldn't they be better or would 25kHz is good enough with these kind of digital amp IC's ?
Gal

Use the cheap SMPS only with caution:
It needs load on all other rails in order to function properly (no smoke).
Connecting more than 1 12v supply in series might work, but the cheap meanwell 24v supplies are designed for 24v, and are even cheaper.
Further, they are smaller.

If you have the money to invest in this 2050 board, then you have money to buy a decent smps to go with it.
If you dont, dont buy any board, or buy the sure board, which is much more moddable.
*goes soldering his tk2050 sure board once more :P

Thank you for your advices, teamacc. Actually, I wanted to order Meanwell 27V SMPS originally but it's a bit bulky and I wanted my new SMPS to fit into particular metal case. The one mentioned above seemed to be good in this aspect and its low price is only a nice bonus. :-)

My understanding is that I do not have to connect two 12V rails in series, it seems to have one 24V, plus +-15V and +5V.

Regarding the price, I paid $25 incl. shipping and custom modification of main output voltage to 36V (well, there were also some other items in my order). I haven't found so cheap Meanwell SMPS anywere yet.

This thread is getting really interesting with input from designer and knowledgeable members. My contribution is merely to point to an alternative method of obtaining a decently charged +24Vdc SMPS at a much lesser cost. It's on Decibel Dungeon detailing the connection of 2x computer SMPS's. SMPS for the Gainclone chip amp

Although it's really for +/- supply there are some details on how to obtain +24V supply. I haven't built such a supply but would like to know the reactions and experience of members as to the technical diy aspects of such a project.

Thanks to all contributors, particularly Nick and hifimediy!
Best regards.
Joe A

This thread is getting really interesting with input from designer and knowledgeable members. My contribution is merely to point to an alternative method of obtaining a decently charged +24Vdc SMPS at a much lesser cost. It's on Decibel Dungeon detailing the connection of 2x computer SMPS's. http://http://myweb.tiscali.co.uk/nu...clonesmps.html
Although it's really for +/- supply there are some details on how to obtain +24V supply. I haven't built such a supply but would like to know the reactions and experience of members as to the technical diy aspects of such a project.

I explored the same idea in the past, realizing that it's dangerous, because if the 'response time' of the switching controller on the first SMPS is not *identical* to the 'response time' on the other SMPS, they could start to oscillate... damaging the TP2050 board, themselves or more simply stop working (entering in protection mode).
So I don't suggest you to try that configuration, 2 switching controllers into the same PSU are never a good idea, although I have no doubt that in most cases it works.
Bye!